AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-08 14:20:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

S390: Do not clobber R0 in 32-bit _dl_runtime_profile

Browse Source 
Preparation for the usage of R0 by __fentry__.

ChangeLog:

	* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile):
	Do not clobber R0.
This commit is contained in:
Ilya Leoshkevich 2018-08-10 09:07:43 +02:00 committed by Stefan Liebler
parent b215eee1e1
commit c8ad85225b
2 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
ChangeLog
View File

@ -1,3 +1,8 @@
2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile):
Do not clobber R0.
2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_resolve):

6
sysdeps/s390/s390-32/dl-trampoline.h
View File

@ -166,6 +166,7 @@ _dl_runtime_resolve:
# define V29_OFF -144
# define V30_OFF -128
# define V31_OFF -112
# define R0_OFF -88
# define R12_OFF -84
# define R14_OFF -80
# define FRAMESIZE_OFF -76
@ -182,6 +183,8 @@ _dl_runtime_resolve:
cfi_startproc
.align 16
_dl_runtime_profile:
st %r0,CFA_OFF+R0_OFF(%r15)
cfi_offset (r0, R0_OFF)
st %r12,CFA_OFF+R12_OFF(%r15) # r12 is used as backup of r15
cfi_offset (r12, R12_OFF)
st %r14,CFA_OFF+R14_OFF(%r15)
@ -245,6 +248,7 @@ _dl_runtime_profile:
cfi_def_cfa_register (15)
l %r14,CFA_OFF+R14_OFF(%r15) # restore registers
l %r12,CFA_OFF+R12_OFF(%r15)
l %r0,CFA_OFF+R0_OFF(%r15)
br %r1 # tail call
cfi_def_cfa_register (12)
@ -285,6 +289,7 @@ _dl_runtime_profile:
cfi_def_cfa_register (15)
l %r14,CFA_OFF+R14_OFF(%r15) # restore registers
l %r12,CFA_OFF+R12_OFF(%r15)
l %r0,CFA_OFF+R0_OFF(%r15)
lm %r2,%r3,CFA_OFF+RET_R2_OFF(%r15) # restore return values
ld %f0,CFA_OFF+RET_F0_OFF(%r15)
# ifdef RESTORE_VRS
@ -316,6 +321,7 @@ _dl_runtime_profile:
# undef V29_OFF
# undef V30_OFF
# undef V31_OFF
# undef R0_OFF
# undef R12_OFF
# undef R14_OFF
# undef FRAMESIZE_OFF